<!-- Not yet
<toolbar.normal>
  <button><span.key>F1</span><span.func>Help</span></button>
  <button><span.key>F2</span><span.func>Prior Pos</span></button>
  <button><span.key>F3</span><span.func>Next Pos</span></button>
  <button><span.key>F4</span><span.func>Prior Doc</span></button>
  <button><span.key>F5</span><span.func>Next Doc</span></button>
  <button><span.key>F6</span><span.func></span></button>
  <button><span.key>F7</span><span.func></span></button>
  <button><span.key>F8</span><span.func></span></button>
  <button><span.key>F9</span><span.func>Markdown</span></button>
  <button><span.key>F10</span><span.func>Source</span></button>
</toolbar>
<toolbar.ctrl>
  <button><span.key>F1</span><span.func></span></button>
  <button><span.key>F2</span><span.func></span></button>
  <button><span.key>F3</span><span.func></span></button>
  <button><span.key>F4</span><span.func></span></button>
  <button><span.key>F5</span><span.func></span></button>
  <button><span.key>F6</span><span.func></span></button>
  <button><span.key>F7</span><span.func></span></button>
  <button><span.key>F8</span><span.func></span></button>
  <button><span.key>F9</span><span.func></span></button>
  <button><span.key>F10</span><span.func></span></button>
</toolbar>
<toolbar.alt></toolbar>
<toolbar.shift></toolbar>-->